The role of methane in plant physiology: a review

Li, Longna; Wei, Siqi; Shen, Wenbiao

doi:10.1007/s00299-019-02478-y

Cited by 37 publications

(24 citation statements)

References 90 publications

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“…Drought-responsive genes are regulated by complex mechanisms, including the transcriptional cascades. Among the transcription factors, AP2/EREBP, WRKY, MYB, NAC, DREB, HSFF, and bZIP are commonly reported transcription factor families in drought stress response [58]. There are two groups of drought-responsive genes, i.e., ABA-dependent and ABA-independent.…”

Section: Impacts Of Drought On Plantsmentioning

confidence: 99%

Plant Nitric Oxide Signaling under Drought Stress

Lau

Hamdan

Pua

et al. 2021

Plants

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Water deficit caused by drought is a significant threat to crop growth and production. Nitric oxide (NO), a water- and lipid-soluble free radical, plays an important role in cytoprotection. Apart from a few studies supporting the role of NO in drought responses, little is known about this pivotal molecular amendment in the regulation of abiotic stress signaling. In this review, we highlight the knowledge gaps in NO roles under drought stress and the technical challenges underlying NO detection and measurements, and we provide recommendations regarding potential avenues for future investigation. The modulation of NO production to alleviate abiotic stress disturbances in higher plants highlights the potential of genetic manipulation to influence NO metabolism as a tool with which plant fitness can be improved under adverse growth conditions.

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Section: Impacts Of Drought On Plantsmentioning

confidence: 99%

Plant Nitric Oxide Signaling under Drought Stress

Lau

Hamdan

Pua

et al. 2021

Plants

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“…Simultaneous analysis of both the host and the microbiome (dual RNA sequencing; Kaul et al ., 2016) would uncover connections between microbial and plant metabolism, and their relation to the CH 4 exchange. Moreover, this type of dual expression analysis would give clues on why , for example, methanogens would inhabit the tree tissues: only for their own benefit or as a part of a mutualistic association potentially aiding the survival of the host (L. Li et al ., 2020). It should be noted that RNA sequencing studies concentrating on the plant host often bypass the microbes by targeting only polyadenylated messenger RNA (mRNA) sequences not present in the prokaryotes.…”

Section: Future Directions For Moving Beyond Descriptive Studiesmentioning

confidence: 99%

“…Overall, discussion on aerobic plant CH 4 production has mainly concentrated on plant physiology, which was recently reviewed by L. Li et al . (2020), whereas a more general view of the current understanding of tree‐derived CH 4 fluxes, magnitudes, processes, and drivers has been presented by Carmichael et al . (2014), Covey & Megonigal (2019) and Barba et al .…”

Section: Introductionmentioning

confidence: 99%

New insight to the role of microbes in the methane exchange in trees: evidence from metagenomic sequencing

Putkinen

Siljanen

Laihonen³

et al. 2021

New Phytologist

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Methane (CH 4 ) exchange in tree stems and canopies and the processes involved are among the least understood components of the global CH 4 cycle. Recent studies have focused on quantifying tree stems as sources of CH 4 and understanding abiotic CH 4 emissions in plant canopies, with the role of microbial in situ CH 4 formation receiving less attention. Moreover, despite initial reports revealing CH 4 consumption, studies have not adequately evaluated the potential of microbial CH 4 oxidation within trees. In this paper, we discuss the current level of understanding on these processes. Further, we demonstrate the potential of novel metagenomic tools in revealing the involvement of microbes in the CH 4 exchange of plants, and particularly in boreal trees. We detected CH 4 -producing methanogens and novel monooxygenases, potentially involved in CH 4 consumption, in coniferous plants. In addition, our field flux measurements from Norway spruce (Picea abies) canopies demonstrate both net CH 4 emissions and uptake, giving further evidence that both production and consumption are relevant to the net CH 4 exchange. Our findings, together with the emerging diversity of novel CH 4 -producing microbial groups, strongly suggest microbial analyses should be integrated in the studies aiming to reveal the processes and drivers behind plant CH 4 exchange.

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“…Also earlier studies have shown that especially root tips are sensitive to WL (Levan & Riha 1986, Grossnickle 1987, Repo et al 2017. Despite having adverse effects on plant roots when occurring at high concentrations in the soil, there are indications that CH4 could be produced by plants and have a role in abiotic stress tolerance by counteracting effects of ROS (Li et. al 2019).…”

Section: Discussionmentioning

confidence: 99%

Here comes the flood! Stress effects of continuous and interval waterlogging periods during the growing season on Scots pine saplings

et al. 2020

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Future climate scenarios for the boreal zone project increasing temperatures and precipitation, as well as extreme weather events such as heavy rain during the growing season. This can result in more frequent short-term waterlogging (WL) leading to unfavorable conditions for tree roots. In addition, it is decisive whether short-term WL periods during the growing season occur continuously or periodically. We assessed the effects of short-termed WL on 4-year-old Scots pine (Pinus sylvestris L.) saplings after shoot elongation started. Waterlogging (WL) lasted either continuously for 2.5 weeks (ContWL) or noncontinuously for 5 weeks, consisting of three repeated 1-week-interval WL periods (IntWL). Both treatments resulted in the same duration of soil anoxia. We studied soil gases, root and shoot growth and physiology, and root survival probability and longevity during the experiment. In the final harvest, we determined shoot and root biomass and hydraulic conductance and electrical impedance spectra of the root systems. Soil CO2 and CH4 concentrations increased immediately after WL onset and O2 decreased until anoxia. Waterlogging decreased fine root survival probability, but there was no difference between WL treatments. Shoot growth suffered more from ContWL and root growth more from IntWL. Needle concentrations of pinitol increased in the WL saplings, indicating stress. No WL effects were observed in photosynthesis and chlorophyll fluorescence. Increased starch concentration in needles by WL may be due to damaged roots and thus a missing belowground sink. Electrical impedance indicated suffering of WL saplings, although root hydraulic conductance did not differ between the treatments. Oxidative stress of short-term and interval WL can have long-lasting effects on shoot and root growth and the physiology of Scots pine. We conclude that even short-term WL during the growing season is a stress factor, which will probably increase in the future and can affect carbon allocation and dynamics in boreal forests.

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The role of methane in plant physiology: a review

Cited by 37 publications

References 90 publications

Plant Nitric Oxide Signaling under Drought Stress

Plant Nitric Oxide Signaling under Drought Stress

New insight to the role of microbes in the methane exchange in trees: evidence from metagenomic sequencing

Here comes the flood! Stress effects of continuous and interval waterlogging periods during the growing season on Scots pine saplings

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